7 Diplococci (a) Streptococci 刀 (b) Tetrad Sarcinae (d) Staphylococci 的世界》
6 上海交通大学通识教育核心课程《微生物的世界》
金黄色葡萄球菌 Figure 18.1 Figure 18.2 Scanning electron micrograph of Blood agar plate growing S.aureus.Some strains show two zor Staplrylococcs aureus (x7,500).This hemolysis.The relatively clearer inner zone is caused by a-tox genus owes its name to the grapelike the outer zone is fuzzy and appears only if the plate has been re Gr.tapyle)appearance of the cluster This outer zone is the B.or"hot-cold,"hemolysin. Staphylococci Intiltrating granulocytes (phagocytes) Core of pus b ⊙ Figure 18.3 Cutaneous lesions of S.aureus.Fundamentally,all are skin abscesses that vary in size.depth.and degree of tissue involvement. ()Sectional view of a boil or furuncle,a single pustule that develops in a hair follicle or gland and is the classic lesion of the species.The inflamed infection site becomes abscessed when masses of phagocytes.bacteria.and fluid are walled off by fibrin 7 (b)A furuncle on the back of the hand.(A carbuncle on the back of the neck.Carbuncles are massive deep lesions that result from multiple,interconnecting furuncles.Swelling and rupture into the surrounding tissues can be marked. 心课程 《微生物的世界》
7 上海交通大学通识教育核心课程《微生物的世界》 金黄色葡萄球菌
上游充通大粤 SHANGHAI JIAO TONG UNIVERSITY 淋病奈瑟氏球菌 Figure 18.25 Gonococcal ophthalmia neonatorum in a week-old infant.The infection is marked by intense inflammation and edema;if allowed to progress,it causes damage that can lead to blindness.Fortunately,this infection is completely preventable and treatable. Figure 18.21 This transmission electron micrograph of Neisseria (x52,000)clearly indicates how the diplococci form. 8 上海交通大学通识教育核心课程《微生物的世界》
8 上海交通大学通识教育核心课程《微生物的世界》 淋病奈瑟氏球菌
Phagocyte 偷上海夫 "Swollen"capsule Cell body Pneumococd Figure 18.20 A positive Quellung,or capsular swelling,test with precipitins,is confirmatory for S.pneumoniae.It car Exudate identify the precise capsular serotype.The reaction with the capsular polysaccharide intensifies the caps Bronchus 肺炎链球菌 Bronchiole Figure 18.18 9 The course of bacterial pneumonia.As the pneumococcus traces a pathway down the respiratory tree,it provokes intense inflammation and exudate formation.The blocking of the bronchioles and alveoli by consolidation of inflammatory cells and products is evident
9 上海交通大学通识教育核心课程《微生物的世界》 肺炎链球菌
上游充通大学 SHANGHAI JIAO TONG UNIVERSITY 2、杆状 细胞呈杆状或圆柱形，一般其粗细（直径)比较稳定， 而长度则常因培养时间、培养条件不同而有较大变化。 杆菌的排列方式一般不作为分类依据。 10 上海交通大学通识教育核心课程 《微生物的世界》
10 上海交通大学通识教育核心课程《微生物的世界》 细胞呈杆状或圆柱形，一般其粗细（直径）比较稳定， 而长度则常因培养时间、培养条件不同而有较大变化。 杆菌的排列方式一般不作为分类依据。 2、杆状